Are you "sure" you want to remember high school? If so, look to Jostens, the leading US producer of yearbooks and class rings through its memory book and scholastic business segments. Class rings are sold on school campuses and through bookstores, retail jewelers, and the Web, while Jostens' sports rings commemorate professional sports champions (it has made more than 25 Super Bowl rings). Its other graduation products include diplomas, announcements, caps, and gowns. Jostens, founded in 1897 and purchased by CSFB in 2003, was later recapitalized to become part of publishing and marketing services company Visant, co-owned by an affiliate of CSFB and KKR & Co.